44 lines
1023 B
C#
44 lines
1023 B
C#
using System.Collections.Generic;
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using System.IO;
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using System.Threading.Tasks;
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using zero.Core.Entities;
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namespace zero.Core.Utils
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{
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public abstract class TableExport<TEntity> : ITableExport<TEntity> where TEntity : IZeroEntity
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{
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public virtual async Task<Stream> Export(TableFormat format = TableFormat.Excel)
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{
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ITableBuilder<TEntity> builder = new TableBuilder<TEntity>(format);
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Build(builder);
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IAsyncEnumerable<TEntity> items = Load();
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MemoryStream stream = await builder.ToStream(items);
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return stream;
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}
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protected virtual async IAsyncEnumerable<TEntity> Load()
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{
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await Task.Delay(0);
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yield break;
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}
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protected virtual void Build(ITableBuilder<TEntity> builder)
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{
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builder.Column("Id").For(c => c.Id).Size(40);
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builder.Column("Name").For(c => c.Name).Size(40);
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}
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}
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public interface ITableExport<TEntity> where TEntity : IZeroEntity
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{
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Task<Stream> Export(TableFormat format = TableFormat.Excel);
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}
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}
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